JP2737854B2 - Broadcast communication control method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a broadcast control method, and more particularly to a broadcast control method in a communication terminal system using ISDN communication.

[Prior Art] Conventional facsimile machines use a specific communication procedure (eg, G
3, G4) -compliant communication networks (for example, telephone networks and packet networks)
Connected to and used. Therefore, it is configured on the assumption that the same type of communication procedure is used and the same type of communication network is used even when performing the broadcast communication.

[Problems to be solved by the invention] However, ISDN is positioned as an integrated network
In a network, terminal devices using various kinds of communication procedures are connected, and when performing a broadcast communication to them, it is necessary to quickly prepare a different communication procedure, but the function is provided in the conventional broadcast communication. There was a problem that the effect was lost.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has made it possible to quickly perform a broadcast communication by performing a broadcast communication by using a call control channel in advance to know a communication procedure of a broadcast communication partner. It is intended to provide a broadcast control method.

[Means for Solving the Problem] and [Operation] In order to solve the problem, the broadcast control method of the present invention has the following configuration. In other words, this is a broadcast control method in a communication network using the ISDN communication method, in which the own terminal address and the own communication procedure are mounted on the call setting channel of the caller, and the addresses of all broadcast destination terminals are mounted. And transmitting each of the destination terminals, when each of the destination terminals receives the data, compares the data with a communication procedure of a transmission source, mounts its own communication procedure in its own area, and passes it to a terminal at another address. And the step of returning the data to the source after the last terminal receiving the data has mounted its own communication procedure, and the source terminal has analyzed the returned data and followed each terminal Performing a broadcast communication.

Embodiment An embodiment according to the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 shows an example of the network in this embodiment.

In the figure, reference numerals 1a to 1f denote facsimile machines, each of which is an ISDN.
It is connected to the network 2.

Now, consider a case where the facsimile apparatus 1a performs broadcast communication with the facsimile apparatuses 1b to 1f.

FIG. 2 shows a data format mounted in the data section of the SETUP command of the call control channel.

As shown in the figure, the data of the terminals 1b to 1f which are the destinations of the broadcast are arranged with the terminal 1a which is the transmission source and the return destination of the present data at the head.

The inside of the data of each destination is as shown in FIG. The flag 3 is normally "0" and is set to "1" when each terminal checks. Address area 4 is a terminal
Addresses 1a to 1f are set. The communication procedure area 5 carries each communication procedure when each terminal receives this data.

 The operation is as follows.

First, when the terminal 1a performs the broadcast communication, the data according to the format shown in FIG.
Pass to.

The terminal 1b finds an area in which its own address is displayed, and sets the flag of the corresponding area to "1". Then, by comparing with the communication procedure of the transmission source, its own communication procedure (comparison result) is mounted in the area of the communication procedure area 5,
This SETUP command data is passed to the terminal 1c.

In this way, this data is sequentially passed to each terminal, and when the last terminal 1f sets its own communication procedure, this data is returned to the terminal 1a.

The terminal 1a that has received the returned data performs the broadcast communication, and the communication procedure at this time is performed using the one notified by each terminal in advance.

Here, the operation procedure of the source terminal will be described with reference to the flowchart of FIG.

First, in step S1, a destination of the broadcast communication is designated. Then, in step S2, the SETUP command data shown in FIG. 2 is created with the address of the own terminal at the head and the address of the destination terminal following it. Thereafter, in step S3, the SETUP command data is output to the ISDN network (D channel). At step S4, the SETUP command data transmitted to each destination terminal is received. In step S5, the communication procedure of each destination terminal is known by analyzing the data. Thereafter, in step S6, broadcast communication is performed to each terminal according to the communication procedure obtained as a result of the analysis.

The processing of the destination terminal is as shown in FIG. 4 (b).

That is, a SETUP command is input (step S10).
First, the flag indicating the own address is set to "1" to notify that the check has been performed (step S11). Thereafter, in step S12, the transmission procedure of the own terminal is mounted in the own area by comparing with the communication procedure of the transmission source, and the SETUP command data is output to the next terminal in step S13.

As described above, according to the present embodiment, it is possible to know the procedure of the communication partner in advance in communication between terminals having different communication procedures, especially when performing broadcast communication. The call setting itself or data creation of a different communication procedure can be performed quickly, and smooth broadcast communication can be performed.

[Effects of the Invention] As described above, according to the present invention, when performing a broadcast communication, the broadcast procedure can be quickly performed by knowing the communication procedure of the broadcast communication partner using the call control channel in advance. become.

[Brief description of the drawings]

FIG. 1 is a diagram showing a network configuration in this embodiment, FIG. 2 is a diagram showing the format of SETUP command data, FIG. 3 is a diagram showing details of the data in FIG. 2, and FIG. FIG. 4 (b) is a flowchart showing the operation processing procedure of the destination terminal. In the figure, 1a to 1f: facsimile machine (terminal), 2: IS
DN network, 3 ... flag, 4 ... address area, 4 ... communication procedure area.

Claims (1)

(57) [Claims] 1. A broadcast control method in a communication network using an ISDN communication system, wherein a self-terminal address and a self-communication procedure are mounted on a call setting channel of a caller, and all broadcast destination terminals are transmitted. Sending the data carrying the address, and each of the other destination terminals, when receiving the data, by comparing its own communication procedure to its own communication procedure in its own area, and installing the terminal of the other address. And the step of returning the data to the source after the last terminal receiving the data has installed its own communication procedure, and the source terminal analyzes the returned data to each terminal Performing a broadcast according to the following.